Improvement in spading-machines



L MHZ/5mi N-PETEVRS, FNCTFO-UTHOGRAPHER, WASHINGTON D C UNITED STATES PATENT OEEICE.

LYMAN SHERWOOD, OF 'LSPRINGFIELD, ILLINOIS.

IMPROVEMENT IN SPADING-MACHINES.

Specification forming part of Letters Patent No. 92,756, dated July 20, 1869.

.To @ZZ whom it may concern:

Be it known that I, LYMAN SHERWooD, of Springfield, Sangamon county, State of Illinois, have invented an improved and useful Spading-Machine; and I do hereby declare that the following is a true, full, and exact description of the construction and operation of the same, reference being had to the accomv panying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in attaching any number of spades to a cylinder revolving` around a stationary shaft, and so connecting and combining them with grooved stationary wheels upon said shaft as to give them the same movements when penetrating the earth and being drawn out as are given to a single spade in the hands of a man when breaking up the ground for seed.

Figure l represents a perspective view of my machine with a portion of the cylinder detached to show the construction of the grooved wheels upon the shaft. The wheels are shown where the slots are for throwing the toggle at the end of the spades shank out and in the groove. Fig. 2 represents a section of the cylinder with a row of spades attached, showing the method of attachment and the shape and construction of the toggles which work in the grooves ofthe wheels upon the shaft.

A is the revolving cylinder, made either of cast-iron or wood, and constructed so as to revolve around the stationary shaft B, which is supported upon the square frame C.

D D D are any number of spades, attached to the revolving cylinder A in any number of rows on a line with the shaft B by means of a round shank perforating the cylinder,

and the toggles a a c at the end of the shank gles c in the grooves of the stationary wheels E, and keep the spades D in one position during a greater portion of the revolution of the cylinder A.

When it is desired to make the spades D describe a half-revolution, as is the case when they are to be drawn from the ground, these fingers b trip upon a stud, d, constructed at a convenient point upon the grooved wheel, which tripping compels a half-revolution of the toggles a a, which throws the stud c out of the groove through a slot in the grooved wheel opposite the stud d. This movement also carries'with it a half revolution of the spades D at the very moment when it is desirous to draw them from the ground7 and thus the earth is loosened and pulverized. The studs c are thrown into the groove again and the spades made to resume their former position by striking a projecting slot, e, farther along on the wheel E, which catches the stud c and draws it back into the groove ofthe wheel E, reversing the revolution `just made.

E E in Fig. 1 are the grooved wheels, and d and e represent, respectively, the stud and slots, which produce, in connection with the toggles a a, fingers b, and stud c, themovement above mentioned.

The weight of the cylinder A and the driver, who is seated above it, forces the spades into the ground, and their friction causes the revolution of the cylinder.

N ow, what I claim as my invention, and desire to secure by Letters Patent, is-

l. A spading-machine constructed and arranged with the revolving cylinder A, stationary shaft B, frame C, spades D, shank and toggles a, fingers b, studs o, grooved wheel E, studs d, and slots e e, substantially as herein described, and for the purposes set forth.

2. The stationary grooved wheels E, constructed and arranged, with the studs d and slots e e, substantially as herein described, and for the purposes set forth.

3. The combination ofthe spades D and shank and toggles a with the revolving cylinder A, arranged substantially as herein described,

l and for the purposes set forth.

4. The combination of the shank and toggles a, fingers b, and studs @with the grooved wheel E, studs d, and slots e e, for the purpose of creating the semi-revolution of the spades D, substantially in the manner herein described.

LYMAN SHERWOOD.

Vitnesses:

GEO. O. MAROY BENJ. S. PAEDEE. 

